Cutting-off device particularly for tubes



1,625,850 Apnl 26 1927' P. GEDIEN ET AL CUTTING-OFF DEVICE PARTICULARLY FOR TUBES Filed Oct. 28. 1926 fig 7 \NVEA/T atented Apr. 26, 1927.

UNITED STATES PATENT OFFICE.

PAUL GEDIEN, OF COLOGNE-BRAUNSFELD, AND KARL SCH'WADE, OF COLOGNE- LINDEN'THAL, GERMANY.

CUTTING-OFF DEVICE PARTICULARLY F OR TUBES. i

Application filed October 28, 1926, Serial No.

cutting means to move parallel to and at the 1 same speed as a length of tube to be cut ofi, so that the cutting operation may be effected Without necessitating any interruption in the tube welding or forming operations. The known devices of this, type, however, have i 1 not proved practicable. In some of the devices with which I am familiar a slide carrying the cutting device is connected automatically by a resilient coupling with the length of tube and moves therewith during the cutting operation, after which the resilient coupling must be released by separate devices in order that the slide may return to its original osition. This manner of operation necessitates the provision of very complicated and expansive mechanism.

The same result is obtained, according to the present invention, in a simpler and cheaper manner by causing the free end of v the length of work, such as tube, to engage directly the cutter-supporting member, thus producing the necessary movement of the cutting tool. 7

One embodiment of the invention is illus tratied by way of examplein the accompanying drawing, which is a sideelevation of a cutting-off device for use with a tube-making mechanism. 4

Referring to the drawing, a guide a, which is secured at the free end to a support d, is 40 mounted at the other end on the base of the welding device rt which device feeds forward the length of tube 6. The slide blocke supporting the tube-cutter'f is mounted for sliding movement on said guide a, and an electrio motor? which operates the belt h of the tube-cutting device is secured to the bottom of the supporting slide block e. Immediately the tube cutter f has been set by position- 144,s99, and in Germany December 23, 1924.

ing the hand lever l: the chuck (not shown in the drawing) of the cutting device grips the tube in known Jnanner. This chuck is provided merely for the purpose of centering the tube in the cutting device. In order that the cutting device shall be moved by and at the same speed as the tube, which is cut b the cutting tool while moving, a channeh shaped extension Z is mounted on a bracket 2' carried by the cutter-supporting slide block 6, said extension having an end wall disposed in the path of movement of the tube b, so that the free end of said tube in its forward movement will engage said wall and cause the cutter-supporting block to slide in parallelism with and at the same speed as the tube. The actuation of the cutting device for the purpose of cutting ed the section of tube is effected during this movement, either by hand or in a further automatic operation. This device ensures that all the sections are of precisely equal .length.

We claim I 1. In a tube-cutting device, the combina-. tion of tube-feeding means, a cuttersupporting block mounted for sliding movement in parallelism with a tube fed by said feeding 715 means and supporting a cutter in axial alinement with said tube, and means carried by said cutter-supporting block and disposed in position to be engaged by the moving. tube thereby to cause sliding movement of said cutter-supporting means.

2. Iii a tube-cutting device, the combination of tube-feeding means, a cutter-supporting block mounted for sliding movement in parallelism with a. tube fed by said feeding' means, and an extension projecting from said block in the direction of/movement of the tube and having a portion disposed in osition to be engaged by the moving tube tlEereby to cause sliding movement of the cuttersupporting means.

In testimony whereof we have signed our names to this specification.

PAUL GEDIEN. KARL SCHW ADE. 

